Soil strainer attachment for dishwashers



May 12, 1953 G. 'H. WOTRING son. STRAINER ATTACHMENT FOR ,DISHW'ASHERS Filed Nov. 24. 1950 Inventor: Ga IQr'd H. We ring, b g His Atbor'ngs.

cup I! formed of thin sheet metal with tiny perforations l3 covering its bottom and sides. I have found that a 26 gage brass sheet with .020 inch diameter holes therein, formed at a frequency of 714 holes per square inch, will give 23% open area in the strainer but will arrest the objectionable soil particles.

A strainer of the above character has been found to be satisfactory for the use intended. This strainer is preferably located, as shown, below the silverware basket, in the path of washing solution returning to the impeller through the basket. In place of the basket, any similar receptacle which will guide the circulating solution to the strainer and is deep enough to prevent collected soil from being splashed or washed outof the strainer may be used.

Spot welded or otherwise suitably secured to the strainer cup are a plurality of resilient arms I4 which are shaped to engage in'some of the large perforations II in the sides of the silver- 'ware basket, -or other receptacle, so that the strainer, although'removable from the tub with "the basket, is also removable from the basket for emptying and cleaning. It is understood that the entire surface of the basket is provided with '-spaced,'-large perforations, and that the entire surface of the strainer is similarly perforated with the tiny soil straining holes. For simplifica- -tion of disclosure, only a few of the holes have 1 been shown in the drawing.

Obviously, the strainer is made about the same size as the bottom of the basket, and solution guidedand falling through the basket will be strained of soil particles before it is again circulated by the impeller. As the machine is operated, and as the solution is repeatedly recirculated by the impeller, virtually all of the water in the tub will have been strained and soil par-' Whenever the silverware basketlis removed, the strainer may be snapped off from the basket for emptying and cleaning. During operation of the machine, the strainer is effective to keep the washing solution free from recirculating soil particles.

ticles' eliminated.

0118 outstanding advantage of the strainer of -my invention is the fact that, whether it is full of soil or not, it does not interfere with normal water circulation in the machine. The water will circu-, late as usual, with no throttling when the strainer r is in or out, empty or full. When the strainer is T clogged,- only the filtering effect is lost.

The washer continues to function properly.

As will be evident from the foregoing descrip- -tion, certain aspects of my invention are not linoited to the particular details of construction 1 of the example illustrated, and I contemplate that various and other modifications and applications of, the invention will occur to those skilled in the art. It is, therefore, my intention that the appended claims shall. cover such modifications and applications as do not depart from the true spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the United States is:

' 1. In a dishwasher having a tub, a silverware silverware basket and being removably secured to the bottom of said basket, whereby solution passing through said basket is strained of soil particles before recirculation by said impeller.

2. In a dishwasher having a tub, a receptacle with perforated bottom and sides removably suspended in said tub, a washing solution impeller in H the tub for moving washing solution through a 1 certain recirculating dishwashing flow pattern which includes passing a portion of said solution downwardly through said receptacle, that improvement comprising a soil strainer removably secured to and below said receptacle'and having a straining portion located under said perforated bottom of said receptacle, said strainer portion including perforations smaller than the perfora- 1 through said basket.

:bottom and sides removably'suspended in said tub and an impeller centrally located near the bottom of the tub below said basket, said impeller moving a Washing solution in said tub through a certain recirculating dishwashing flow pattern which includes passing a portion of said-v solution downwardly through said silverware,basket, that improvement comprising a soil strainer removably secured to the bottom of said basket by spring arms removably engaging perforations on the sides of said basket, said strainer having a straining portion of fine mesh located under the perforations in the bottom of said basket, whereby solution passing through said basket is strained of soil particles before recirculation by said impeller. u

4. In a dishwasher of the type having a tub, a

water impeller centrally located in asump at the bottom of said tub, and a perforated silverware holding basket removably suspended above said impeller in the path of washing solution circulated in the tub by the impeller, that improvement which comprises a soil strainer having a fine soil filtering surface therein removably mounted on said basket whereby the water circulated in said tub by the impeller is strained as I it falls through said basket.

5. In a dishwasher of the type having a tub, a water impeller centrally located in a sumpat the bottom of said tub, and a perforated silverware .holding basket removably suspended; above said impeller in the path of water circulated in the tub by the impeller, that improvement which comprises a soil strainer in the form of a shallow cup with fine soil filtering surfaces and resilient arms extending from said cup removably to seat in perforations in said basket, whereby said soil strainer cup may be removably mounted on the bottom ofsaid basket and the water circulated in said tub by the impeller is strained as it falls 6. In a dishwasher having a tub, a receptacle 1 with a perforated bottom suspended in said tub,

a washing solution impeller in the tub for moving. washing solution in the tub through a certain receptacle and through said perforated bottom before returning it to said impeller for recirculation, that improvement comprising. a .soil

, strainer removably mounted below said perforated bottom and having perforations smaller whereby part .of the solution is strained'of'soil 5 particles during circulation of said solution in said tub by said impeller.

7. In a dishwasher having a tub, a receptacle suspended in said tub and having an open top and bottom, a Washing solution impeller in the tub for moving solution in the tub through a certain recirculating dishwashing flow pattern which includes passing a portion only of said solution into the open top of said receptacle and downwardly through said receptacle before returning it to said impeller for recirculation, that improvement comprising a soil straining portion below the open top of said receptacle, whereby part of the solution is strained of soil particles during circulation of said solution in the tub by the impeller.

GAYLORD I-I. WOTRING.

References Cited in the file of this patent UNITED STATES PATENTS 

